Apollo 620F Series Cast Iron Gate Valve, Class 250, Non-Rising Stem, 2-1/2″ Flanged

This class 250 Apollo Valve 620F series cast-iron gate valve has cast-bronze seat rings and flanged end connections for bolting to pipe flanges. The cast-iron construction, bolted bonnet, and solid wedge gate provide compressive strength and resistance to wear and the cast-bronze seat rings equip it for higher pressure applications and help resist corrosion and erosion over time. The valve has a non-rising stem, which stays fixed in place when the gate is raised or lowered for low clearance or underground use, and the graphite internal packing helps prevent the valve’s stem from leaking. This gate valve is full port for reduced friction; its inner diameter is the same as the inner diameter of the pipe it connects to enable maximum operating efficiency. The valve’s maximum pressure is 500 pounds per square inch (gauge) (psig) for cold working pressure (CWP) and 250 psig for steam working pressure (SWP), and it has a temperature range of -20 degrees F to 406 degrees F. It has flanged end connections on both ends for bolting to compatible American National Standards Institute (ANSI) 250- and 300-lb. flanges. Mounted on top of the valve, a rugged iron hand wheel activates the inside screw mechanism which lifts and lowers the gate to start and stop the flow between the connected pipes. This gate valve comes with a two-year manufacturer warranty against workmanship or material defects. For quality assurance, this class 250 valve meets Manufacturers Standardization Society (MSS) SP-70 standards and American Society of Mechanical Engineers (ASME) B.16.1 standards for flanged valves. Class is a standard relating to tolerance, construction, dimension, and wall thickness, but it is not a direct measurement of maximum working pressure. The valve is appropriate for use in plumbing, heating, and building service piping systems.

Gate valves control flow in a piping system by lifting a gate out of the path of steam, fluids, or gases. They are designed to block or permit flow, as the vibrations and force of flow repeatedly striking a partly lowered gate can damage the gate and seats. To accommodate different flows and pressure requirements, gates come in four types: solid wedge (appropriate for almost all liquid service), flexible wedge (appropriate for steam service), split wedge (appropriate for normal temperature, non-condensing gas and liquid service, including corrosive service), and parallel disc (appropriate for high and low pressure applications). Hand wheels or levers activate the screw mechanism in the valve’s bonnet, which comes in various designs, to open and close the gate. Union bonnets are preferable for building service piping, threaded-in (or screw-in) bonnets work well for lighter-duty usage, and bolted body-bonnet connections are used primarily in iron multi-turn valves. Most gate valves have either a rising stem, which moves up and down with the gate, or a non-rising stem, which remains fixed in place. When closed, the gate and its seats form tight planar sealing surfaces, ideal for linear liquid flow. Gate valves are used in air, gas, liquid, and steam applications.

Conbraco Industries, Inc. manufactures ball, mixing, and relief valves, actuators, water gauges, marine fittings, heating and plumbing products, and backflow prevention devices under the Apollo Valves brand. The company, founded in 1928 and headquartered in Matthews, NC, meets international standard ISO/IEC 17025:2005 and makes products that meet International Organization for Standardization (ISO) and American National Standards Institute (ANSI) standards.

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Made from cast iron for compressive strength and resistance to wear
Cast-bronze mounted seat rings and back seat protection resists erosion and corrosion
Non-rising stem stays fixed in place when gate is raised or lowered for low clearance use
500 pounds per square inch (gauge) (psig) for cold working pressure (CWP) and 250 psig for steam working pressure (SWP)
Flanged end connections for bolting to compatible-sized pipe flanges